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Cylinder: The figure given below is a cylinder. Given below are some

Edge • A cylinder has 3 faces (1 examples of a cylinder.
Plane face
curved and 2 plane) and

Curved 2 edges.
face
• It does not have any
vertices.

Cone: The figure given below is a cone. Given below are some

Vertex • A cone has 2 faces (one examples of a cone.
plane and the other
Curved face
curved).

• It has 1 vertex and 1 edge.

Edge
Plane face
Sphere: The figure given below is a sphere. Some spherical objects

Curved • A sphere has one face are shown below:
face (curved).

• It does not have any edge

or vertex.

Exercise 8a

1. Look at your surroundings and name:

a. one cubical object. ________ b. one spherical object. ________

c. one cylindrical object. ________ d. one cuboidal object. ________

2. How many faces, vertices and edges do these solids have?

Solids Faces Vertices Edges

Cube

Cuboid

120 Mathematics 2